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Sts subproject in the Theta model checking framework

There is a newer version: 6.8.5

/*
 *  Copyright 2024 Budapest University of Technology and Economics
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package hu.bme.mit.theta.sts.aiger.elements;

import static com.google.common.base.Preconditions.checkArgument;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

/**
 * Represents a constant false signal.
 */
public final class FalseConst extends AigerNode {

    private final Collection outWires;

    public FalseConst() {
        super("F_v0");
        this.outWires = new ArrayList<>();
    }

    @Override
    public Collection getInWires() {
        return Collections.emptyList();
    }

    @Override
    public Collection getOutWires() {
        return outWires;
    }

    @Override
    public void addOutWire(final AigerWire outWire) {
        checkArgument(outWire.getSource().equals(this));
        outWires.add(outWire);
    }
}